Code of Federal Regulations (CFR)
The CFR is a codification of the rules published in the Federal Register by the Executive departments and agencies of the Federal Government. Federal register: microfilm AE2.106: (2nd floor east). Tutorial http://www.archives.gov/federal-register/cfr/ . Selected CFR years in HathiTrust Digital Library at http://catalog.hathitrust.org/Record/006222388 and http://catalog.hathitrust.org/Record/003911273). Recent CFR and Federal Register years are at http://www.gpo.gov/fdsys/ (right column, "Featured Collections").